That's hardly an M5 though................Actually it's not an M5. I'd like to see that powerplant in an actual M5 chassis, and see what it would run. I'm willing to bet it would be in the mid 8 sec range.

Yeah, it's just the motor pretty much. Twin turbo V10 making 1800+ hp
That's too much power for an actual M5 chassis to handle. Would need to be really beefed up.